I had problems while "archiving" my app. I think there are invalid profiles because of iPhone Update to 5.1 and XCode update to 4.2.2.
I\'ve taken now more
I am a member of 2 teams and had the same problem while uploading one of the projects. Changing General -> Identity -> Team to None in project settings (XCode 5) allowed me to upload the application to iTunesConnect.
Screenshot is here